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Патент USA US2409952

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Oct. 22, 1946;
~ 2,409,951
Filed May 7, 1942
2 Sheets-Sheet 1
w %%
‘Oct. 22, 1946..
Filed May 7, ‘1942'
2 Sheéts-Sheet 2
Patented Oct. 22, 1946
Julian H. Nootens, Chicago, Ill., assignor to
United States Gypsum Company, Chicago, 111.,
a corporation of Illinois
Application May 7, 1942, Serial No. 442,095
1 Claim.
(Cl. 154-44)
the herein described insulating bat, and accord
This invention relates to members used for the
heat insulation of buildings, the process of manu
facturing the same, and one form of apparatus
for carrying out the indicated process of making
said insulating members orunits. Such insulat
, cause the warm air in a room rises and therefore
ing members are frequently referred to as insu
lating blankets or bats and are adapted to be ar
ranged, in one use thereof, between the upright
be desired differentially to distribute the insula~
tion to take care of the heat concentration at
ingly a wall construction embodying such differ
ential distribution of insulation material is an
other herein described and claimed feature. Be
accumulates at or near the ceiling level, it may
studding in building walls and between the joists
the ceiling height. Moreover, the temperatures
in the ?oor, ceiling or roof structure.
Accordingly, the herein described invention
also concerns a wall construction in which stand
ard insulating units are so formed that wall
spaces to be equipped therewith may be prac
at lower levels in the same room are in progres
sively decreasing degrees lower than at the ceiling
scribed recognizes the existence of differing tem
tically and desirably insulated irrespective of
peratures at various levels in a room and pro
variations in the length or thickness of said
spaces or in the degree of insulation required in
said spaces.
The insulating bats or blankets may be made
vides insulation varying in accordance therewith.
This invention accordingly has for its object
to‘provide a reenforced corrugated 'or extensible
level. One of the wall constructions made pos
sible by the use of the improved bat herein de
' insulation bat or blanket that can be adapted,
from a variety of ?brous material such, for, in 20 within reasonable limits, to spaces of varying
lengths and thicknesses including the method of,
stance, as mineral or slag wool, glass wool, cot
and an apparatus for, ‘producing such a bat;
ton, balsam pulp, or other ?brous materials, all
moreover, the invention contemplates an im
of which are of a generally loose or fluffy charac
proved method of wall construction in which the
ter and are adapted to be matted or felted to
gether to form a blanket which provides desirable 25 aforesaid bat is an important element. ‘
In addition to the many constructional advan
insulating qualities. In forming bats from such
materials, it is frequently desirable to make use
of binders, among which may be mentioned
starch, waxes, drying oils, asphalt, pitches, syn
thetic resins, and many other similar materials. 30
Insulating bats or blankets are at present manu
factured in various thicknesses as required by
the wall thickness or space in which the blanket
is to be ?tted.
The material is matted, more
An important part of the invention consists in
over, in accordance with the amount of insula
tion required. Finally, insulation bats are made
in‘certain standard lengths best to anticipate the
needs of the usual building dimensions.
tages ?owing from the provision of the aforesaid
bat, a further advantage resides in this—the bats
may be compressed in appreciably smaller cubic
space Within a carton for purposes of shipment
than has heretofore been possible; yet when re
moved from the shipping cartons, they (the bats)
can be readily expanded to the originally intended
However, should an unusual dimension be en
countered, i. e., one which is not a multiple of
some available length of bat, it is, of course, nec
matting or felting the loose or fluffy material in
association with a reenforcing member of such
character as to make the mineral wool portion
of the bat substantially self-sustainingr in a Va.
riety of extensible forms. The reenforcing may
be disposed internally oi the woolportion or may
, be positioned near or on the surface of the wool
essary to piece out the space by cutting enough
portion, it being understood that the reenforcing
from a standard length bat to ?ll'out the length
means is itself su?iciently ?exible to be extensible
of the space to be ‘insulated. Again; if it is de
or compressible as the bat is extended or com
sired substantially to ?ll a space of unusual thick
, pressed. Such reenforcement may be in the form
ness, either a plurality of thicknesses of stand
of sti?ening strips of metal, plastic or other ma
ard bat must be jammed into the out-size thick
terials, or it is within the scope of the invention
ness space or, if the latter is of less thickness than
:to utilize a lightweight Woven or expanded metal
usual, more material is used than required.
Finally, it has been practically impossible simply 50 mesh or a metal sheet as a reenforcing and hold
ing member.
and expeditiously, when using standard units, to
vary the amount of insulation in a given space.
Inasmuch as no one has heretofore proposed
The ability to vary the diiferential distribution
the formation of insulating members as herein
of the insulation in an intrawallspace isanother
advantage which may be obtained when using
, described and/or- the use thereof .as hereafter set
forth, it must immediately be‘ understood that
the mere presence of paper or similar vapor seal
material on the surface of a corrugated member
does not satisfy the necessities of the present in
vention, i, e., the bat must be reenforced in such
manner that it is entirely self-sustaining and
may be positioned as hereinafter set forth. Ac
cordingly, it must be emphasized that while one
effective means of combining the reenforcing
members with the insulating bat is to internally
dispose such members, nevertheless it is also
within the scope of the present disclosure to po
sition such reenforcing members on or near one
either in the drawings and/or in the speci?ca
tion and/or in the claim or claims (may be in
any one of the three sections of the application
to the exclusion of the other two)—whether or
not speci?ed as new and/or comprising part of
the invention and which were unknown before
applicant entered the ?eld, are applicant’s in
In short, everything in the drawings is new
unless it shall be found to have been known here
tofore. Moreover, irrespective of whether or not
all of the elements, or combinations thereof,
shown in the drawings or described in the speci
or the other of the outside surfaces of the bat; in
the following description of the method of form
?cation or claimed in the claim are asserted to
ing the new bat, this idea of placing the reen 15 be new, it is intended that the mere disclosure of
forcing members on or near the outside of the
these elements, and/or any combinations there
bat is described. Again, the reenforcing means
of, constitutes a claim of invention to every ele
may be placed between the bat and any vapor
ment and combination not known before appli_
seal barrier which may be secured to the outside
cant’s contribution.
of the bat. Such vapor seal barrier may be paper 20 ‘ Therefore, any and all combinations disclosed
and in such case the renforcement will then be
in any one or more of the three parts of this
placed between the paper seal and the mineral
wool portion of the bat.
application may be claimed originally or at any
future time. The necessity of claiming at some
future time what is not now speci?cally desig
nated as applicant’s invention may arise because
others may claim what applicant has here dis
closed but in language not now anticipated as
Accordingly, while mineral wool intended to
be utilized for insulating purposes may have here
tofore been corrugated, there has never been
any appreciation that it should be reenforced and
corrugated to be self-sustaining as and for the
de?nitory by applicant. Accordingly, future
purposes herein described.
‘drafted claims may be required properly to pro
,When the blanket is reenforced as indicated, 30 tect applicant because he cannot now anticipate
it will not sag after being disposed in the build
the variations of language which others may deem
ing wall and will be much more resistant to com
descriptive of some element or combination of
pression than the bats now in use. Moreover,
elements shown in applicant’s drawings.
the reenforcing means assists in maintaining the
Again, something fully disclosed by applicant
bat uniform in thickness and insures that it 35 may be unwarrantedly asserted not to have upon
will remain in place for many years without un
the ?ling hereof been stated to be an invention.
dergoin'g. the shrinking which is now sometimes
Since, however, it is above pointed out that every
thing in the disclosure not heretoforeknown is
_In addition to other advantages herein speci
invention, right is reserved to here
?ed, the present invention permits the formation, 40 applicant’s
after assert claims to all material herein de
between wall studs, of a plurality of dead air
spaces. .Sllch dead air spaces are recognized as
having high and effective heat insulation value.
In the hereinafter described drawings, it will be
seen that when a corrugated bat is placed be
tween wall studs the apices of the corrugations
.will touch the two opposed wall surfaces and
thus effectively. create a plurality of dead air
spaces. ‘These air spaces can, moreover, be varied
as to effectiveness in accordance with the heat 1
insulation which, is required at the differing tem
perature levels in the‘room being insulated; if
the convolutions are arranged close together at
one point but spaced apart at another point
the intrawall space, the dead air spaces are de- ;
sirably varied in effectiveness.
Ashereinbefore suggested, it is intended here
Finally, even if an element, or combinations
of elements, are herein described as performing
only one purpose, applicant’s invention covers
and provides for any and all other and/or addi
tional purposes which any structure of the draw
ings may hereafter be found .to ful?ll or be de~
scribed'as ful?lling. It is accordingly intended
hereby to designate as applicant’s invention. all
_ purposes or uses thereof, and the right is reserved
to add claims setting forth such purposes at any
time prior to issue so long as the subject matter
of such claims are disclosed upon ?ling.
The purpose of-these reservations is to ,elimi- .
.nate forthrightly any assumption—byvanyone or
by any tribunal or by any court hereafter specu
lating-concerning what inventions may be dis
closed in this application—that every element
product, an illustrative machine which may be 60 and/or combination of elements disclosed in this
application is not intended to be asserted as ap- '
used in following out the indicated process, the
plicant’s invention.
method of constructing a novel insulated wall
Accordingly, for a more complete understands
structure, and the wall structure itself. Accord
to. disclose as component parts of this invention
the product itself, the process of forming the
ingly, other objects and advantages of the inven~
“tion will appear from a consideration of the fol
lowing detailed speci?cation.
Moreover, the recital of the foregoing objects
or ‘statements of the invention is not intended
to limit the inventive disclosure of the drawings.
The latter are to be taken as the most fully in
formatory source of what applicant’s invention
comprises. Accordingly, any and all novel fea~
ing of the invention, reference is made to the accompanying drawings,'in~ which
Figure I illustrates in perspective an insula
tion bat or blanket embodying'the present in
vention, the reenforcement thereof being shown,
as comprising three strips of internally-disposed
material, although it is understood that, if de
sired, a- sheet of lightweight metal, for instance
metal mesh, may be incorporated with the bats
instead of metal strip to provide reen’forcement
lures. and/or combinations of features which are
disclosed herein (the word “disclosed” ‘being used
,asdistinguished from “stated” or “claimed”)‘--: w .. Jli‘igrIa, is ‘a fragmentary enlarged elevational
sectional view of a portion of the bat of Fig. I
showing the manner in which an internally dis
posed reenforcing strip appears when it_ is in
corporated with the bat.
Fig. 1b is a similar fragmentary view showing
. Referring now more particularly to Fig. I, the
bat comprises a body of loose or ?uffy material III
which has been so matted or felted about inter
nally-disposed reenforcing members I'I—II—II
and which has been so formed as to present a
corrugated appearance. As heretofore indicated,
the reenforcing members may be of light metal,
the manner in which the reenforcing means ap
pears when the latter is placed near, or- on, the
surface of the bat.
stiff paper (treated or untreated), vulcanized
?ber, elastic plastic or similar materials. More
over, it is to be understood that the reenforcing
member may comprise a light sheet of metal such,
for instance, as lightweight metal mesh. Insu
lating bats embodying the present invention are
de?nitely more ?exible and accommodable in use
Fig. 10 is a similar fragmentary view illustrat
ing the reenforcing means positioned on the out
side of the bat but between the mineral wool ma
terial thereof and a vapor seal or paper cover
which may be adhered to the bat.
Fig. Id is a fragmentary view of a bat as shown
than previously known products suggested for
in Fig. I wherein transverse strips are added to
the reenforcing means, it being observed that
these strips may, if desired, extend beyond the
similar purposes.
side margins of the bat and that these transverse
gitudinal strip reenforcements are shown as hav
In Figs. 1?) and I0 the heretofore described lon
members are intended to be slightly ?exible so
ing been socombined with the mineral ‘wool bat
that when the ends thereof are sharpened or are 20 that the reenforcing means are, in effect, exter
nally disposed with respect to the main portion
provided with teeth they (the transverse mem
bers) may be secured in place by being bowed
and/0r stuck into the wood uprights-as shown
of the bat material. This can be accomplished
by feeding the reenforcing material in such a way
in a hereinafter-referred-to view-thereby to fix
into the room in which the ?bers are received
the bat permanently in relation to the wall.
Fig. II is a perspective view illustrating the
that the material is properly proportioned and
that they (the reenforcing means) are so associ
ated with the main body of ?bers that the latter
does not surround the reenforcing means as in
the previously described bat. Of course, adhesive
may be used on the reenforcing means, or such
adhesive as may be supplied by the binder of the
bat itself may be taken advantage of to secure
‘the desired adhesion between the reenforcing
means and the ?bers. Again, as shown particu
manner in which any of the aforementioned bats
may be disposed between adjacent wall studs, this
showing being illustrative of the manner in which
the same sized bat may be utilized in ?lling spaces
of unequal linear dimensions.
Fig. III is a view similar to Fig. II but illus
trates the manner in which the same sized bat
may be used to ?ll—from face to face--spaces of
the same linear dimension but in walls of differ 35 larly in Fig. 10, externally disposed reenforcing
ent thicknesses.
means may be positioned‘ between the mineral
Fig. IIIa is a plan sectional view showing the
wool portion of the bat and any vapor seal barrier
manner in which a bat provided with transversely
I4 that may be used-for instance, a paper vapor
extending reenforcing means is secured between
seal barrier-it being intended that all of these
the upright studs in a wall space, it being‘noted
variations are to be read as within the scope
that—-in order to slip the bat into position (a
bat being illustrated both before and after posi
tioning)—the transverse members are slightly
of the appended claim.
bowed and the ends of the latter are stuck into,
longitudinally extending reenforcing strips II
or grab, the wood of the uprights, thereby assist
ing in preventing sagging of the bat and insur
is shown in Fig. Id.
The manner in which transversely extending
bars or tying rods‘ Ila are associated with‘the
Such cross members im
part additional structural rigidity to the bat and
ing that the latter will remain in the position in
enable the latter to be more easily handled. The
which it is originally placed.
transversely extending reenforcing means Ila
Fig. 1111) is a fragmentary elevational sectional
are either secured to the strips II (whether the
view illustrating the manner in which a bat
50 latter are internally or externally disposed) in
when so placed that the apices of the corruga
which case they (the rods IIa) comprise tying
tions therein touch opposite wall surfaces-com
rods for the general reenforcing structure, or
prehends a plurality of effective heat insulating
these transverse members I la may be separately
dead air spaces.
incorporated with the mineral wool portion of
Fig. IE0 is an elevational sectional View illusm 55 the bat (in the latter case they might be dis
trating the manner in which a bat, the apices of
posed on, or near, the surface of the bat while
whose corrugations touch opposite wall surfaces
the longitudinal strips are internally disposed,
of the intrawall space, may be arranged to pro
or vice versa). Again, said rods I la may—either
vide differential distribution of insulation mate
when incorporated independently of the strips
rial in the intrawall stud spaces as dictated by 80 II or when attached to the latter-be held be
the temperatures of the different heat levels in
tween a vapor seal barrier such as I4 and the
body Ill of the bat.
the space being insulated.
Fig. IV is a schematic showing in elevational
These reenforcing means may, if desired, be
partial section of apparatus for forming the bat
made slightly longer in dimension than the trans
embodying the hereinbefore described invention,
verse space between the two upright studs de?n
it being understood that this is only one machine
ing the space into which the bat‘is to be placed.
which can be used to carry out the hereinafter
Accordingly, it may be necessary slightly to bow
the transversely extending means to place the
bat in position. Such bowing of- these rods will
claimed process of manufacturing the insulation
bat incorporating the invention.
readily secure the bat in the position in which it
Fig. IVa is a top view of the wool room of Fig.
IV illustrating the staggered manner in which
three strips I I are fed into the top of said room.
Fig. IVb is a fragmentary elevational sectional
view of a modi?cation of the apparatus shownin
Fig. IV.
is initially placed, and if it is found desirable,
the ends of the transversely extending reenforc
ing meansmay be sharpened‘so that they will
more readily . stick into,‘or grab, the Wood up
In Fig. II the studs and top and bottom plates
of a ‘wall structure are somewhat schematically
‘the position of the bat before being slipped into
place between the upright studs.
shown, it being noted that the linear dimension
The elevational sectional viewof Fig. 1H?) illus
of the space between the two left-hand studs is
trates the manner in which desirable dead .air
spaces are provided when a bat of the construc
tions here disclosed is so placed between intrawall
considerably shorter than the space between the
two right-hand studs. This situation would be
surfaces [5 and Ilia.’ that the apices of the corru
gations touch the two opposed wall surfaces.
Nevertheless standard bats of the present inven
Bats which do not include the invention set forth
tion may be so disposed as satisfactorily to ?ll 10 herein will not satisfactorily eventuate this dead
both linear spaces. The left-hand space being
air space structure for the reason that, even
though they promise to ful?ll the builder’s desire
much the shorter has been filled without extend
ing or pulling out the corrugations of bat it.
in this respect when ?rst installed, they will in
, One desirable method of installing such a bat
time sag and it is then too late to restore them
has been indicated by illustrating an end plate 15 in original position. On the other hand, bats
I2 provided with openings l3 in which latter the
having the reenforcements proposed herein are
hooked ends of the reenforced strips are posi
constant in position and insure the existence of
tioned. After nailing one of the end plates in
the desirable insulating dead air spaces through
out the life of the structure in which the bats are
place, the bat is drawn down and the other plate
encountered, for instance, if a window or other
similar opening existed in the wall at the left.
is nailed to the bottom of the space. As indi 20 incorporated.
By reference to Fig. 1110 it will be understood
cated, the linear space between the two left»v
how the herein described insulating bat can, be
hand studs in 'Fig. II is about as long as the
arranged in the intrawall stud space to obtain a
standard bat here being described. No exten
di?erential distribution of heat insulation, re
sion of bat I0 is therefore necessary.
However, in order to accommodate the same 25 membering that there may be a concentration of
heated air at the ceiling height level and that-this
size bat to the longer space between the two
concentration decreases as the height from the
right-hand studs, it will be noted that bat lilb
floor decreases. The bat is arranged in the space
has been considerably extended. This may be
shown with the convolutions close together near
accomplished by nailing the top end plate in
place and then carefully extending the convolu 30 the top ofrthe space, i. e., near the‘ ceiling and
tions and nailing the bottom end. plate after the
bat has been suf?ciently extended completely,
to'?ll the linear space indicated.
The central space in the schematic wall of Fig.
with those convolutions being gradually pulled
out to greater and greater extent as the height
from the floor decreases.
' -~ Under normal circumstances the reenforcement
in the bat is su?icient to hold the convolutions of
the latter in whatever extended position in which
those convolutions are originally'placed in the
of the present invention may be adjusted to pro
intrawall space between adjacent studs, this be
vide varying degrees of insulation. When the
ing particularly true when the bat is of normal
standard bat is extended as shown at We, the
total amount of material in a given space will 40 commercial weight. If, however, it is desired
further to insure that the convolutions will re
be decreased and the insulation value of the
in the originally disposed position, i. e.,
bat correspondingly varied. However, this is one
will not sag from whatever extended
of the advantages obtained by using the herein
position in which they are placed to secure the
described bat and should be borne in mind in
herein recited advantages, the frictional engage
reading the appended claim.
ment of the sides of the bat with the studs bound
From another point of View, the heretofore
ing the sides of theintrawall space (occurring
explained corrugation of the bat is of distinct
when the bat is pushed into position between
advantage. In Fig. III the two studs at the vleft
the studs) can be invoked to‘ hold the bat in posi
are intended to illustrate a wall of a thickness 50 tion. Furthermore, mostccrnmercial. bats have
substantially equal to the distance from the ridge
a flap at the sides thereof and this flap can be
of one convolution to the ridge of the next
secured to the studs if conditions dictate. Finally,
neighboring convolution before the bat is pulled
othersecuring means can be employed if it ap
out, i. e., when the latter is in a substantially
pears’ that unusual conditions may cause the bat
normal and unextended condition. The'two 55 convolutions to sag after they have been originally
studs at the right of Fig. III, however, illustrate
disposed in a predetermined desired position.
II is insulated by bat lllc, this variation being
illustrated to emphasize that an insulating bat
a possibility which may be encountered, 'i. e., p
,This arrangement not only gradually decreases
where the thickness of the space'to be ?lled is
in thickness the amount of insulation per unit considerably less than-that illustrated at the left
space from the ceiling to the floor level but also
of Fig. III; Under these conditions, by extend 60 results in a desirable variation in distribution of
ing the eonvolutions of the bat, optimum use is
the dead air spacesbetween the studs. By so
made thereof, i. e., the bat is reduced in thick
utilizing the herein‘described insulating bat, a
ness to ?t snugly into the decreased thickness
novel and highly advantageous wall construction
of the space indicated. True, if the linear di
ensues. Economies are thus obtained not only by
mensions of the two spaces of unequal thickness 65 so using the insulating material most e?iciently—
are the same, it will be necessary to out off that
as dictated by the heat levels in the interior
extending portion of the bat formed by decreas
space-but also in the resuits that are obtained
ing the thickness of the bat as indicated at the
in the‘ actual construction.
vright of Fig. III.
Broadly speaking, it
intended that a bat'of
In Fig. 11111., is shown a plan sectional View of 70 the character above described ‘shall be manu
two uprights between which a bat having the
factured by forming or matting the iluify mate
transverse tie rods Ila has been positioned, the
rial around, or in combination with, one or more
manner in which such rods Ila must—prior to
reenforcing members. This process in one of its
installation—be bowed being shown in dotted sec
‘desirable forms is‘illustrated in "connection with
tional view of the bat, the latter‘, of course,_being
The reenforcing members such as H are pro
gressed through a chamber 20 (sometimes desig
nated as the wool room) , the ?u?y material being
blown into chamber 2!! from a material reservoir
2! through a nozzle 22. If the material to be
used is mineral wool, the aforesaid nozzle 22 may
exit from a mineral melting cupola and a steam
blowing" nozzle which breaks down the melt,
thereby to cause ?ne threads resembling wool to
pass out of the nozzle 22 and into the chamber 2!}. 10
The wire or other reenforcing members are un
staggered or set progressively forward of the
point of ingress of the wool ?bers that the above-J
mentioned screen effect (which might be encoun
tered if the three strips de?ned a plane extend
ing transversely of the chamber) is eliminated.
When the strips are so fed into the wool room or
chamber 25, the wool ?bers are found to be
associable with the stripsin the desired manner
before being passed out of the room in question.
At the bottom of the wool chamber 20 a belt 26
is fed forwardly of and within the chamber by
rollers 26a ‘and 26b, thereby to provide a for
coiled from rolls 23 and passed through ?atten
wardly moving surface extending completely
ing and/or progressing rolls 24-24. It may be
desirable to apply adhesive to the reenforcing
across the bottom of the chamber 20 and upon
members, thereby to insure that the mineral wool 15 which the wool ?bers fall. This movable surface
or belt 26 is progressed to the right (referring to
or other ?uffy material will adhere more securely
thereabout. Accordingly, adhesive applying sta
Fig. IV) at the same speed as are the strips II,
tions are diagrammatically shown at 25-—25—25.
with the result that a properly formed bat exits
The supply of ?u?y material to the chamber 28
from the chamber 20 as shown at the lower right
is so regulated with respect to the speed of 20 hand thereof. If the transverse strips are to be
progression of the reenforcing members there
used in the reenforcing means, they maybe add
through that the ?u?y material is distributed
ed either before or after the bat exits from th
equally above and below the reenforcing members,
room 20.
as shown at the right of chamber 2!].
As the ?uffy material matted around the reen
There is a distinct technique necessary in form 25 forcing members exits from chamber 20, a cor
ing the bat with the reenforcing members cor
rugating devicee-diagrammatically indicated ‘at
rectly disposed with respect to the mineral wool
2l—28—operates upon the matted reenforced
material to form it into the product shown in Fig.
portion of the bat. For this reason among others
I. The corrugating means as here illustrated
it must not be overlooked that the invention re
sides in the manner of forming the bat and the 30 comprises reciprocating ?at plates 21-28 which
apparatus usable therein as well as in the product
are so timed in movement that the corrugation
will be formed as indicated, the relative motion
produced. It is necessary, for instance, to feed
between plates 2'l-28 being such that one of
the reenforcing members into that room into
them holds a last corrugation in place while the
which the mineral wool ?bers are blown in such
a Way that the ?bers will properly group them 35 next plate is forming the following corrugation.
Any desired means of imparting the proper for
selves with respect to the reenforcing members;
ward motion to the corrugated strip may be em
this presents a problem which is unique and the
ployed, i. e., so that a new area is corrugated each
solution of which is covered by the appended
claim. When ?bers are blown into the con?ned
While the reenforcing strips have been illus
space, it is necessary to prevent the longer of the 40
trated in Fig. IV as entering the blowing room
?bers from so disposing themselves transversely
from above thereby to insure that the heretofore
across the reenforcing means as to form a barrier
explained undesired deposition of the raw ?bers
or net and thereby prevent the desired uniform
upon the strips will be prevented, it will never
deposition of the shorter ?bers around the re
enforcing means. Because of this, it has been 45 theless be realized that the reenforcing means
may enter through other walls of the blowing
necessary to evolve a method of manufacture
chamber and the direction thereof changed as
which would prevent such contingency, partic
desired so that the above desirable conditions will
ularly since one desirable reenforcing means com
be insured. It is not deemed necessary to show
prises ?exible metal strips upon which the long
this variation in a drawing, but it will be under
?bers have a tendency to fall transversely and
stood that the claim is to be so read that the lat
thus form the net heretofore referred to. In
ter speci?ed method and apparatus Will be there
order to overcome this condition, the method of
within, it being applicant’s intention that the
forming the bat comprehends certain steps to in
last-mentioned alternative should not fall with
sure the desired result, and the apparatus herein
described for carrying out this process, although 55 out the practical scope of the present invention
and/ or of the claim de?ning the same.
forming but one means whereby the steps may
If it is desired to apply a vapor barrier to the
be performed and in part only schematically
bats, asphalt-coated paper backing may be uti
shown, is nevertheless in itself unique and sus
lized; this may be adhered to the wool mass
ceptible of claimed protection.
Accordingly, the process ‘will be described in 60 before corrugating, thereby to insure that the
same will remain in place as the corrugations are
connection with the machine used for carrying
stretched as hereinbefore described.
out the same and it will be understood that neither
One means of securing such a vapor barrier is
depends upon the other and that the process and
shown in Fig. IVb wherein the paper I4 is fed
machine are distinct inventive concepts. In order
properly to meet the requirements, the mineral 65 from a roll Ma and against an adhesive applying
Wool is blown into an enclosed chamber. The re
enforcing means are fed (as an example, when
three such reenforcing means are incorporated
with the bat) from the top of the chamber in
member 14b extending partially into adhesive
containing box I40.
From the foregoing description of the novel in
sulating bat and the manner in which it can be
such staggered relation that the ?bers will not 70 utilized in ?lling wall spaces, it will be apparent
that one of the important features thereof lies in
be unduly impeded in their normal deposition
the fact that only one thickness of the material
about these reenforcing means.
need be manufacturedto meet a variety of erect
Accordingly, the three strips shown as provid
ing conditions. It is at present necessary to
ing the reenforcing means are illustrated as being
fed into the top of the chamber 20 and are so 75 manufacture several thicknesses to anticipate the
various conditions which may be met with in th
construction ?eld; for instance, it is now ordinary
to ?nd bats of one-inch in’ thickness and others
of three-inches in thickness.
set forth in the drawings is limiting in any respect
the monopoly herein claimed by applicant. It is
on the contrary intended that all claims herein
after allowed, whether made initially herein or
to be hereinafter added (assuming. that they are
However, by reason of the present invention, a
properly supportable by the drawings or speci?
blanket of one-inch in thickness may be manu
iactured and then corrugated to eventuate a bat
cation or claims originally made herein), shall
having in fact a possible thickness of four (4)
measure the scope of the invention herein set
forth. Accordingly and with the foregoing in
inches and as ,hereinbefore explained such a bat
wouldpermit the user thereof satisfactorily to ?ll 10 mind, what is claimed as new and is desired to be
secured by Letters Patent is:
all intrawall spaces between the one-inch‘and
four-inch dimensions, Thus a readily available
and very ?exible material adaptable to the var
ious intrawall spaces which may be met with on
various jobs is provided.
This not only is an advantage to the erector
who need not concern himself with the precise
thickness of the wall space he must ?ll (assum
ing of course that such spaces areknown to be
within the limits hereinafter set forth4)—but it
is" always “of marked advantage to the manufac
turers and wholesalers who need only make and
stock one standard material in order to meet all
of_t_he requirements in the ordinary job.
‘ ‘It is not intended that the description hereto 25
fore given of the invention or the showing thereof
An insulating member formed with corrugated
convolutions to permit extensibility thereof
throughout the limits imposed by the longitudi
nal stretched-out length thereof on one hand
and the telescoped longitudinal dimension’ there
of on the other, and having foraminous reinforc
ing means incorporated therein; the transverse
members of said reinforcing-means being longer
than the width of the insulating member and
being of springable'material to permit their being
bent and sprung into engagement to support said
insulating member between two boundary
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